ZHANG, Chengwei. Supply Chain Concentration Is Not an Effective Predictor of A Share Excess Returns—Negative Evidence Based on the Fama MacBeth Method. CPS Digital Library - Series of Conferences, [S. l.], n. 1, p. 46–52, 2026. Disponível em: https://seriesofconference.com/index.php/SCJ/article/view/484. Acesso em: 9 oct. 2026.